Battery.



' PATENTED JULY 21, 1903.

D. DRAWBAUGH.

BATTERY.

APPLICATION FILED APR. 12, 1902 N0 MODEL.

l y m, m wfim w/ M 0 I Wifgzsses form.

UNITED STATES Patented July 21, 1903.

PATENT OFFICE.

BATTERY.

SPECIFICATION forming part ofvLetters Patent N 0. 733,949, dated July21, 1903. Application filed April 12 1902. Serial No. 102,527. (Nomodel.)

To all whom it may concern.-

Be it known that 1, DANIEL DRAWBAUGH, a citizen of the United States,residing at Eberlys Mill, in the county of Cumberland and State ofPennsylvania, have invented certain new and useful Improvements inBatteries,

of which the following is a specification.

This invention relates to an improved dry battery; and the main objectof myinvention is the provision of a dry battery which is composed ofmaterials which lessen the cost of manufacture of such batteries andwhich increase the life and efficiency thereof. These objects areattained by forming a dry battery, as herein set forth and moreparticularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical central sectionalView of a dry bat tery constructed according to and embodying myinvention. Fig. 2 is a top plan view thereof; and Fig. 3 is acrosssection taken on line m m, Fig. 1.

Referring by letter to the drawings, A designates an outer cylinder orpackage made of zinc, this package having connected at one point on itsupper edge a binding-post B, to which is made an electrical connection.Mounted in this cylinder in the center thereof is the flat stick 0, ofcarbon, which is preferably made in a flat form and has connected to itsupper exterior end D the binding-post E, to which is connected the otherelectrical connection. Surrounding this carbon and contained in thecylinder is a composition F, of coke, plumbago, and a small quantity ofplaster-of-paris, enough to form a paste, so that the carbon by means ofits recesses G is securely held in the cylinder. Around this compositionis placed a paper or other-porous material cylinder H, which forms adivisional wall between the composition and the alkali J, which isplaced in the space between the cylinder Aand the cylinder H. Thisalkali is generally made of a composition of concentrated lye or causticsoda,with a small amount of plaster-of-paris to hold the composition inI have also used hydraulic cement in place of the plaster-of-paris andhave found it to be an excellent substitute.

Placed within the cylinder A, surrounding the carbon-and'resting uponthe parts F, H, and J, is a ring K of heavy paper, upon which is poureda layer L of melted pitch or tar to hermetically seal the package, andthus prevent the contents from becoming deteriorated from exposure tothe outside elements.

Both of the compositions F and Jshonld be thoroughly mixed before beingplaced in the battery-form.

It is also evident that a battery constructed according to thisinvention is much cheaper, as the ingredients are cheaper, and that amore practical and efficient battery is produced.

'VVhat I claim as new, and desire to secure by Letters Patent, is-

1. A dry battery comprising an outer surrounding electrode, a centralopposite electrode surrounded thereby, a composition of carbon,plumbago, and a plastic material surrounding the central electrode, andan alkali composition incased by the first-mentioned electrode andsurrounding central electrode and the first-mentioned composition.

2. A dry battery, comprising an outer surrounding electrode, an excitantcomposition of alkali and a plastic material, a centrallyopposedelectrode and a composition of carbon and plumbago surrounding saidcentral electrode.

3. A dry battery, comprising an outer surrounding electrode, an excitantcomposition of an alkali, a centrally-opposed electrodeand a compositionof carbon and plumbago surrounding the central electrode.

4. A dry battery, comprising an outer surrounding electrode, an excitantcomposition of an alkali and caustic potash, a centrally opposedelectrode and a composition of carbon and plumbago surrounding saidcentral electrode.

5. A dry battery, comprising an outer surrounding electrode, an'excitant composition of alkali and plaster-,of-paris, acentrally-opposed electrode and a composition of carbon and plumbagosurrounding said central electrode.

6. A dry battery, comprising an outer surrounding electrode, an excitantof caustic potash and a plastic material, a centrally-opposedelectrodeand a composition of carbon and plumbago surrounding saidcentral elec trode.

'7. A dry battery, comprising an outer surrounding electrode, anexcitant composition of potash and plaster-of-paris, a centrally-opposedelectrode and a composition of carbon and plumbago surrounding saidcentral electrode.

8. A dry battery, comprising an outer surrounding metallic cylinder, astick of carbon surrounded thereby, a composition of carbon and plumbagosurrounding said stick, and

an alkali surrounding the composition and the carbon stick and incasedby the cylinder.

9. A dry battery, comprising an outer casing of zinc, an alkali excitanttherein, a composition of coke, plumbago and a plastic materialsurrounded by the alkali, and an electrode mounted in the composition.

10. A dry battery, comprising an outer surrounding electrode, a porouscylinder mounted therein, an excitant made of an alkali and Witnesses:

FRANK S. HERTZLER, JAcoB D. GRISSINGER.

